Number Checker. Phone tracer

REX · free.whoiscalling.rivex

Not rated yet 100K+ downloads v5.3 24.7 MB Android 7.0+ PEGI 3 · Everyone

Download APK 24.7 MB All versions

Same certificate as the 3 other versions checked Details

Number Checker. Phone tracer screenshot 1

Number Checker. Phone tracer screenshot 2

Number Checker. Phone tracer screenshot 3

Number Checker. Phone tracer screenshot 4

Number Checker. Phone tracer screenshot 5

Number Checker. Phone tracer screenshot 6

At a glance

Latest version: v5.3 (54)
Updated: Sep 10, 2026 (29 days ago)
APK size: 24.7 MB
Requires: Android 7.0+ (API 24)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Books & Reference (app)
Listed since: Aug 15, 2019 (at least)
Permissions: 13
Website: domosoft.biz
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Number Checker. Phone tracer is an app by REX in the Books & Reference category, listed since at least August 2019. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 4.7, the APK grew from 10.4 MB to 24.7 MB and the minimum Android version rose from 5.0 to 7.0. It asks for 13 permissions, none of them sensitive. It asks for the same permissions as version 5.2. The app can read the advertising ID that ad and analytics services use.

What's new in v5.3

Bug fixed

Description

From the listing uploaded by “catappult”.

This application will help to determine telephone numbers, both mobile and fixed telecom operators around the world by using codes. Guide consists of two modules: - Identification “Who called?” Just enter your phone number and you will receive information by the following numbers of telephone subscriber: country, state, region, area, city, town. - The instruction "How to call?" It helps to find and display the plan of numbers as handy reference of codes for countries, cities and mobile operators worldwide. Please note, this application can’t tell you who's calling, but it can help to find by telling where the call is from, providing that the number of subscriber is fixed and attached geographically or to the network provider. Database is constantly updated and corrected, as it is located on a remote server. The program requires an Internet connection. The application is free.

Version history

6 versions are listed, going back to v4.7. Since v5.3 it requires Android 7.0+.

v5.3 LATEST Sep 10, 2026 24.7 MB TRUSTED v5.2 Sep 10, 2026 23 MB TRUSTED v5.1 Sep 10, 2026 20.6 MB TRUSTED v5.0 Sep 10, 2026 20.1 MB TRUSTED v4.8 Sep 10, 2026 11.2 MB TRUSTED

All 6 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “DOMOsoft” Not the developer's name (“REX”). Names in certificates can't be verified, so this alone proves nothing.
Same certificate as the 3 other versions checked

Store checks and file details

Developer signature verified Sep 10, 2026
Signed byCN=DOMOsoft, L=Moscow, C=RU
Signing certificate (SHA-1)4A:7B:B2:0A:52:D3:E4:67:A7:C4:B1:B3:BC:04:18:2D:AE:53:57:A5
File MD5a4b3d79715d32f10749038545f943c01
Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

Number Checker. Phone tracer requests 13 permissions, none of them sensitive.

Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Attest (custom) com.amazon.privacypass.ATTEST
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play license check com.android.vending.CHECK_LICENSE
Internal broadcast protection (app-defined) free.whoiscalling.rivex.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait
Wi-Fi android.hardware.wifi

Number Checker. Phone tracer APK: questions and answers

Is there a version of Number Checker. Phone tracer for older Android phones?

The current version needs Android 7.0 or later. Version 5.2 is the newest listed build that installs on Android 6.0 and later. Get version 5.2 · All versions

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Number Checker. Phone tracer APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the 3 other versions checked. After downloading, check that the file's MD5 is a4b3d79715d32f10749038545f943c01.